Obosh, the Preypiercer, Heartless Hidetsugu, and Platinum Angel

Prerequisites

• Obosh, the Preypiercer on the battlefield
• Heartless Hidetsugu on the battlefield
• Platinum Angel on the battlefield

Steps

1. Activate Heartless Hidetsugu by tapping it, causing it to deal lethal damage to each player with an even life total and nearly lethal damage to each player with an odd life total
2. You cannot lose the game due to Platinum Angel

Results

• Each opponent with an even life total loses the game
• Near-infinite damage